import pytest
from unittest import mock

from rest_framework import serializers

from awx.api.versioning import reverse
from awx.main.utils.encryption import decrypt_field
from awx.conf import fields
from awx.conf.registry import settings_registry
from awx.conf.models import Setting


@pytest.fixture
def dummy_setting():
    class context_manager(object):
        def __init__(self, name, **kwargs):
            self.name = name
            self.kwargs = kwargs

        def __enter__(self):
            settings_registry.register(self.name, **(self.kwargs))

        def __exit__(self, *args):
            settings_registry.unregister(self.name)

    return context_manager


@pytest.fixture
def dummy_validate():
    class context_manager(object):
        def __init__(self, category_slug, func):
            self.category_slug = category_slug
            self.func = func

        def __enter__(self):
            settings_registry.register_validate(self.category_slug, self.func)

        def __exit__(self, *args):
            settings_registry.unregister_validate(self.category_slug)

    return context_manager


@pytest.mark.django_db
def test_non_admin_user_does_not_see_categories(api_request, dummy_setting, normal_user):
    with dummy_setting('FOO_BAR', field_class=fields.IntegerField, category='FooBar', category_slug='foobar'):
        response = api_request('get', reverse('api:setting_category_list', kwargs={'version': 'v2'}))
        assert response.data['results']
        response = api_request('get', reverse('api:setting_category_list', kwargs={'version': 'v2'}), user=normal_user)
        assert not response.data['results']


@pytest.mark.django_db
def test_setting_singleton_detail_retrieve(api_request, dummy_setting):
    with dummy_setting('FOO_BAR_1', field_class=fields.IntegerField, category='FooBar', category_slug='foobar'), dummy_setting(
        'FOO_BAR_2', field_class=fields.IntegerField, category='FooBar', category_slug='foobar'
    ):
        response = api_request('get', reverse('api:setting_singleton_detail', kwargs={'category_slug': 'foobar'}))
        assert response.status_code == 200
        assert 'FOO_BAR_1' in response.data and response.data['FOO_BAR_1'] is None
        assert 'FOO_BAR_2' in response.data and response.data['FOO_BAR_2'] is None


@pytest.mark.django_db
def test_setting_singleton_detail_invalid_retrieve(api_request, dummy_setting, normal_user):
    with dummy_setting('FOO_BAR_1', field_class=fields.IntegerField, category='FooBar', category_slug='foobar'), dummy_setting(
        'FOO_BAR_2', field_class=fields.IntegerField, category='FooBar', category_slug='foobar'
    ):
        response = api_request('get', reverse('api:setting_singleton_detail', kwargs={'category_slug': 'barfoo'}))
        assert response.status_code == 404
        response = api_request('get', reverse('api:setting_singleton_detail', kwargs={'category_slug': 'foobar'}), user=normal_user)
        assert response.status_code == 403


@pytest.mark.django_db
def test_setting_signleton_retrieve_hierachy(api_request, dummy_setting):
    with dummy_setting('FOO_BAR', field_class=fields.IntegerField, default=0, category='FooBar', category_slug='foobar'):
        response = api_request('get', reverse('api:setting_singleton_detail', kwargs={'category_slug': 'foobar'}))
        assert response.data['FOO_BAR'] == 0
        s = Setting(key='FOO_BAR', value=1)
        s.save()
        response = api_request('get', reverse('api:setting_singleton_detail', kwargs={'category_slug': 'foobar'}))
        assert response.data['FOO_BAR'] == 1


@pytest.mark.django_db
def test_setting_singleton_retrieve_readonly(api_request, dummy_setting):
    with dummy_setting('FOO_BAR', field_class=fields.IntegerField, read_only=True, default=2, category='FooBar', category_slug='foobar'):
        response = api_request('get', reverse('api:setting_singleton_detail', kwargs={'category_slug': 'foobar'}))
        assert response.data['FOO_BAR'] == 2


@pytest.mark.django_db
def test_setting_singleton_update(api_request, dummy_setting):
    with dummy_setting('FOO_BAR', field_class=fields.IntegerField, category='FooBar', category_slug='foobar'), mock.patch('awx.conf.views.clear_setting_cache'):
        api_request('patch', reverse('api:setting_singleton_detail', kwargs={'category_slug': 'foobar'}), data={'FOO_BAR': 3})
        response = api_request('get', reverse('api:setting_singleton_detail', kwargs={'category_slug': 'foobar'}))
        assert response.data['FOO_BAR'] == 3
        api_request('patch', reverse('api:setting_singleton_detail', kwargs={'category_slug': 'foobar'}), data={'FOO_BAR': 4})
        response = api_request('get', reverse('api:setting_singleton_detail', kwargs={'category_slug': 'foobar'}))
        assert response.data['FOO_BAR'] == 4


@pytest.mark.django_db
def test_setting_singleton_update_dont_change_readonly_fields(api_request, dummy_setting):
    with dummy_setting('FOO_BAR', field_class=fields.IntegerField, read_only=True, default=4, category='FooBar', category_slug='foobar'), mock.patch(
        'awx.conf.views.clear_setting_cache'
    ):
        api_request('patch', reverse('api:setting_singleton_detail', kwargs={'category_slug': 'foobar'}), data={'FOO_BAR': 5})
        response = api_request('get', reverse('api:setting_singleton_detail', kwargs={'category_slug': 'foobar'}))
        assert response.data['FOO_BAR'] == 4


@pytest.mark.django_db
def test_setting_singleton_update_dont_change_encrypted_mark(api_request, dummy_setting):
    with dummy_setting('FOO_BAR', field_class=fields.CharField, encrypted=True, category='FooBar', category_slug='foobar'), mock.patch(
        'awx.conf.views.clear_setting_cache'
    ):
        api_request('patch', reverse('api:setting_singleton_detail', kwargs={'category_slug': 'foobar'}), data={'FOO_BAR': 'password'})
        assert Setting.objects.get(key='FOO_BAR').value.startswith('$encrypted$')
        response = api_request('get', reverse('api:setting_singleton_detail', kwargs={'category_slug': 'foobar'}))
        assert response.data['FOO_BAR'] == '$encrypted$'
        api_request('patch', reverse('api:setting_singleton_detail', kwargs={'category_slug': 'foobar'}), data={'FOO_BAR': '$encrypted$'})
        assert decrypt_field(Setting.objects.get(key='FOO_BAR'), 'value') == 'password'
        api_request('patch', reverse('api:setting_singleton_detail', kwargs={'category_slug': 'foobar'}), data={'FOO_BAR': 'new_pw'})
        assert decrypt_field(Setting.objects.get(key='FOO_BAR'), 'value') == 'new_pw'


@pytest.mark.django_db
def test_setting_singleton_update_runs_custom_validate(api_request, dummy_setting, dummy_validate):
    def func_raising_exception(serializer, attrs):
        raise serializers.ValidationError('Error')

    with dummy_setting('FOO_BAR', field_class=fields.IntegerField, category='FooBar', category_slug='foobar'), dummy_validate(
        'foobar', func_raising_exception
    ), mock.patch('awx.conf.views.clear_setting_cache'):
        response = api_request('patch', reverse('api:setting_singleton_detail', kwargs={'category_slug': 'foobar'}), data={'FOO_BAR': 23})
        assert response.status_code == 400


@pytest.mark.django_db
def test_setting_singleton_delete(api_request, dummy_setting):
    with dummy_setting('FOO_BAR', field_class=fields.IntegerField, category='FooBar', category_slug='foobar'), mock.patch('awx.conf.views.clear_setting_cache'):
        api_request('delete', reverse('api:setting_singleton_detail', kwargs={'category_slug': 'foobar'}))
        response = api_request('get', reverse('api:setting_singleton_detail', kwargs={'category_slug': 'foobar'}))
        assert not response.data['FOO_BAR']


@pytest.mark.django_db
def test_setting_singleton_delete_no_read_only_fields(api_request, dummy_setting):
    with dummy_setting('FOO_BAR', field_class=fields.IntegerField, read_only=True, default=23, category='FooBar', category_slug='foobar'), mock.patch(
        'awx.conf.views.clear_setting_cache'
    ):
        api_request('delete', reverse('api:setting_singleton_detail', kwargs={'category_slug': 'foobar'}))
        response = api_request('get', reverse('api:setting_singleton_detail', kwargs={'category_slug': 'foobar'}))
        assert response.data['FOO_BAR'] == 23
